package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 分类业务层
 */
@Service
@Slf4j
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 新增分类
     */
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.DISABLE);//默认禁售
        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.save(category);
    }

    @Override
    public PageResult page(CategoryPageQueryDTO pageQueryDTO) {
        PageHelper.startPage(pageQueryDTO.getPage(),pageQueryDTO.getPageSize());
      Page<Category> page  =  categoryMapper.select(pageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public void delete(Long id) {
        Integer dish = dishMapper.dish(id);
        if(dish>0){
            throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        Integer integer = setmealMapper.setMeal(id);
        if(integer>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.delete(id);

    }

    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.update(category);

    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = new Category();
        category.setId(id);
        category.setStatus(status);
        categoryMapper.update(category);
    }

    @Override
    public List<Category> list(Integer id) {
      List<Category> list =  categoryMapper.list(id);
      return list;
    }

    @Override
    public List<Category> list1(Integer type) {
       List<Category> list = categoryMapper.list1(type);
       return list;
    }
}
